Partial Constrained Viscoelastic Damping Treatment Of Structures: A Modal Strain Energy Approach

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Moreira, R.A.S. (Author) Other; Rodrigues, J. Dias (Author) FEUP

Journal

Title: International Journal of Structural Stability and Dynamics

Vol. 6 No. 3

Pages: 397-411

ISSN: 0219-4554

Publisher: World Scientific

Indexing

ISI Web of Science

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

DOI: http://www.worldscientific.com/doi/abs/10.1142/S02

Abstract (EN): The constrained viscoelastic layer damping treatment is an effective means for the passive vibration control of plate and beam-kind structures. In order to reduce the treatment cost, while minimizing structural modifications, particularly the increase in mass, constrained viscoelastic treatments can be successfully applied in a partial and localized manner. The effectiveness of these treatments depends on their extension and relative location with respect to the target mode shape, which is not usually expeditiously established. In order to minimize the cost of the numerical optimization of the partial treatments, an efficient numerical methodology based on the ratio between the modal strain energy of the treated area and that of the structure is hereby proposed. This method is used in the analysis of the location and extension effects of partial constrained viscoelastic treatments on the modal damping of thin plates. The numerical results are verified through an experimental study on specimens with partial constrained viscoelastic layer damping treatments.

Language: English

Type (Professor's evaluation): Scientific